Iodine is liberated from potassium iodide.
10I−+2MnO4−+16H+→2Mn2++8H2O+5I2
PotassiumdichromateK2Cr2O7+7H2SO4+6KI→Cr2(SO4)3+3I2+4K2SO4+7H2O
2Fe3++2KI→2Fe2++I2+2K+
Given below are two statements:
Statement I : Iron (III) catalyst, acidified K2Cr2O7 and neutral KMnO4 have the ability to oxidise I− to I2 independently.
Statement II: Manganate ion is paramagnetic in nature and involves pπ−pπ bonding.
In the light of the above statements, choose the correct answer from the options.
Held on 27 Jul 2022 · Verified 6 Jul 2026.
Both statement I and Statement II are ture
Both statement I and Statement II are false
Statement I is true but Statement II is false
Statement I is false but Statement II is true
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
First and second ionization enthalpies of lithium are $520$ kJ mol$^{-1}$ and $7297$ kJ mol$^{-1}$ respectively. Energy required to convert $3.5$ mg lithium (g) into $\text{Li}^{2+}$(g) $[\text{Li(g)} \rightarrow \text{Li}^{2+}\text{(g)}]$ is _______ kJ mol$^{-1}$. (nearest integer) [Molar mass of Li $= 7$ g mol$^{-1}$]
Regarding the hydrides of group 15 elements $\mathrm{EH}_{3}(\mathrm{E}=\mathrm{N}, \mathrm{P}, \mathrm{As}, \mathrm{Sb})$, select the correct statement from the following: A. The stability of hydrides decreases down the group. B. The basicity of hydrides decreases down the group. C. The reducing character increases down the group. D. The boiling point increases down the group. Choose the correct answer from the options given below:
Which of the following elements has the highest electronegativity?
Which of the following elements has the highest electronegativity?
In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right element, except noble gases, are respectively.
Work through every JEE Main Inorganic Chemistry PYQ, year by year.